10020003120 has 240 divisors, whose sum is σ = 34666343712. Its totient is φ = 2592092160.

The previous prime is 10020003113. The next prime is 10020003127. The reversal of 10020003120 is 2130002001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10020003113) and next prime (10020003127).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10020003127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5814579 + ... + 5816301.

Almost surely, 2^10020003120 is an apocalyptic number.

10020003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10020003120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17333171856).

10020003120 is an abundant number, since it is smaller than the sum of its proper divisors (24646340592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10020003120 is a wasteful number, since it uses less digits than its factorization.

10020003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1971 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 10020003120 its reverse (2130002001), we get a palindrome (12150005121).

The spelling of 10020003120 in words is "ten billion, twenty million, three thousand, one hundred twenty".